Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fly ash-ardealite composite basic magnesium sulfate cement and preparation method thereof
The invention discloses fly ash-ardealite composite basic magnesium sulfate cement and a preparation method thereof, and belongs to the technical field of building materials. Aiming at the problems of single solid waste use type, low mixing amount and poor water resistance in the preparation of the solid waste composite basic magnesium sulfate cement in the prior art, the preparation method comprises the following steps: firstly, uniformly mixing fly ash, phosphogypsum and magnesium oxide to obtain composite powder, then adding a magnesium sulfate solution added with a modifier into the composite powder, and uniformly mixing to obtain the solid waste composite basic magnesium sulfate cement. And curing and curing to obtain the fly ash-ardealite composite basic magnesium sulfate cement. According to the fly ash-ardealite composite basic magnesium sulfate cement prepared by the invention, the setting time can be limited and regulated through the mixing amount of the ardealite, and the compressive strength can reach 72.5 MPa and the softening coefficient is 0.72 after the cement is cured at room temperature for 28 days. The method has the advantages of greenness, economy, simple process, environmental protection and waste treatment, can meet the construction strength requirement in the cement field, and is easy to realize the industrialization of the magnesium-based cement and the large-scale consumption of solid wastes.
本发明公开了一种粉煤灰‑磷石膏复合碱式硫酸镁水泥及制备方法，属于建筑材料技术领域。针对现有技术中制备固废复合碱式硫酸镁水泥中固废使用种类单一、掺量低、耐水性差的问题，本发明首先将粉煤灰、磷石膏与氧化镁均匀混合为复合粉料，然后将加有改性剂的硫酸镁溶液加入到复合粉料中，经过养护固化得到粉煤灰‑磷石膏复合碱式硫酸镁水泥。本发明制备的粉煤灰‑磷石膏复合碱式硫酸镁水泥，凝结时间可通过磷石膏的掺量进行限定调控，室温下养护28d的抗压强度可达72.5MPa，软化系数0.72。本发明具有绿色经济、工艺简单、环保治废，可满足水泥领域的施工强度要求，易实现镁基水泥的产业化和固废的规模化消纳。
Fly ash-ardealite composite basic magnesium sulfate cement and preparation method thereof
The invention discloses fly ash-ardealite composite basic magnesium sulfate cement and a preparation method thereof, and belongs to the technical field of building materials. Aiming at the problems of single solid waste use type, low mixing amount and poor water resistance in the preparation of the solid waste composite basic magnesium sulfate cement in the prior art, the preparation method comprises the following steps: firstly, uniformly mixing fly ash, phosphogypsum and magnesium oxide to obtain composite powder, then adding a magnesium sulfate solution added with a modifier into the composite powder, and uniformly mixing to obtain the solid waste composite basic magnesium sulfate cement. And curing and curing to obtain the fly ash-ardealite composite basic magnesium sulfate cement. According to the fly ash-ardealite composite basic magnesium sulfate cement prepared by the invention, the setting time can be limited and regulated through the mixing amount of the ardealite, and the compressive strength can reach 72.5 MPa and the softening coefficient is 0.72 after the cement is cured at room temperature for 28 days. The method has the advantages of greenness, economy, simple process, environmental protection and waste treatment, can meet the construction strength requirement in the cement field, and is easy to realize the industrialization of the magnesium-based cement and the large-scale consumption of solid wastes.
本发明公开了一种粉煤灰‑磷石膏复合碱式硫酸镁水泥及制备方法，属于建筑材料技术领域。针对现有技术中制备固废复合碱式硫酸镁水泥中固废使用种类单一、掺量低、耐水性差的问题，本发明首先将粉煤灰、磷石膏与氧化镁均匀混合为复合粉料，然后将加有改性剂的硫酸镁溶液加入到复合粉料中，经过养护固化得到粉煤灰‑磷石膏复合碱式硫酸镁水泥。本发明制备的粉煤灰‑磷石膏复合碱式硫酸镁水泥，凝结时间可通过磷石膏的掺量进行限定调控，室温下养护28d的抗压强度可达72.5MPa，软化系数0.72。本发明具有绿色经济、工艺简单、环保治废，可满足水泥领域的施工强度要求，易实现镁基水泥的产业化和固废的规模化消纳。
Fly ash-ardealite composite basic magnesium sulfate cement and preparation method thereof
一种粉煤灰-磷石膏复合碱式硫酸镁水泥及制备方法
CHENG FANGQIN (Autor:in) / CAO CHONG (Autor:in) / FANG LI (Autor:in) / MENG XINLI (Autor:in) / LI XIAOQIANG (Autor:in) / HAO JIANHUA (Autor:in) / NIU JIANBO (Autor:in)
25.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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